Synthetic seismograms from generalized ray tracing
Synthetic seismograms from generalized ray tracing
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广义射线追踪合成地震图
DOI：
10.1111/j.1365-2478.1995.tb00124.x
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发表时间：
1995
影响因子：
2.8
通讯作者：
H. B. Helle
中科院分区：
文献类型：
--
作者：
A. Hanyga;H. B. Helle
本文提出了一种新的数值计算焦散线区域弹性波场的方法。该方法是渐近射线理论（ART）的一个扩展。该方法的基本特征包括应用表达式，这些表达式在焦散处定义良好，并在焦散阴影中用光线跟踪与复杂光线跟踪相结合的方式表示。简要介绍了方法和基本理论的轮廓，然后与有限差分的测试模型，包括焦散尖比较。比较结果显示，新方法的准确度出乎意料地高
A new method of numerical computation of elastic wavefields in regions containing caustics is tested. The method is an extension of the asymptotic ray theory (ART). The essential features of the method consist of the application of expressions which are well defined at caustics and expressed in terms of ray tracing combined with complex ray tracing in caustic shadows. The method and an outline of the underlying theory are briefly presented, followed by a comparison with finite differences on a test model involving a caustic cusp. The comparison reveals the unexpectedly high degree of accuracy of the new method